海上风机半潜式基础概念设计与水动力性能分析

he semi-submersible floating foundation is designed to support a generic 5MW wind turbine, the motion behaviors and survivability of the floating foundation are analyzed under different wind and wave. The structure system of wind turbine and hydro dynamics model are established with considering the blade aerodynamics, loads of wind and wave and coupled floating foundation and mooring system. The blade aerodynamic load is obtained by blade element momentum theory, and the loads transfer function is calculated in frequency domain. The dynamics response characteristics in time domain is calculated under different wind and wave for wind turbine of floating foundation, the survivability of semi-submersible floating foundation under extreme sea condition is assessed. It is shown that the motion performance of semi-submersible floating foundation is good, and the capacity of resist extreme seas state is enough.